#include <cstdio> 
#include <climits> 
   
// Number of vertices in the graph 
#define V 9 
int minDistance(int dist[], bool sptSet[]) 
{ 
   // Initialize min value 
   int min = INT_MAX, min_index; 
   
   for (int v = 0; v < V; v++) 
     if (sptSet[v] == false && dist[v] <= min) 
         min = dist[v], min_index = v; 
   
   return min_index; 
} 
   
void printSolution(int dist[], int n) 
{ 
   printf("Vertex   Distance from Source\n"); 
   for (int i = 0; i < V; i++) 
      printf("%d tt %d\n", i, dist[i]); 
} 
 
void dijkstra(int graph[V][V], int src) 
{ 
     int dist[V];     // The output array.  dist[i] will hold the shortest 
                      // distance from src to i 
   
     bool sptSet[V]; // sptSet[i] will true if vertex i is included in shortest 
                     // path tree or shortest distance from src to i is finalized 
   
     // Initialize all distances as INFINITE and stpSet[] as false 
     for (int i = 0; i < V; i++) 
        dist[i] = INT_MAX, sptSet[i] = false; 
   
     // Distance of source vertex from itself is always 0 
     dist[src] = 0; 
   
     // Find shortest path for all vertices 
     for (int count = 0; count < V-1; count++) 
     { 
       // Pick the minimum distance vertex from the set of vertices not 
       // yet processed. u is always equal to src in the first iteration. 
       int u = minDistance(dist, sptSet); 
   
       // Mark the picked vertex as processed 
       sptSet[u] = true; 
   
       // Update dist value of the adjacent vertices of the picked vertex. 
       for (int v = 0; v < V; v++) 
   
         // Update dist[v] only if is not in sptSet, there is an edge from  
         // u to v, and total weight of path from src to  v through u is  
         // smaller than current value of dist[v] 
         if (!sptSet[v] && graph[u][v] && dist[u] != INT_MAX  
                                       && dist[u]+graph[u][v] < dist[v]) 
            dist[v] = dist[u] + graph[u][v]; 
     }
     printSolution(dist, V); 
} 

int main() 
{ 
   /* Sample graph */
   int graph[V][V] = {{0, 4, 0, 0, 0, 0, 0, 8, 0}, 
                      {4, 0, 8, 0, 0, 0, 0, 11, 0}, 
                      {0, 8, 0, 7, 0, 4, 0, 0, 2}, 
                      {0, 0, 7, 0, 9, 14, 0, 0, 0}, 
                      {0, 0, 0, 9, 0, 10, 0, 0, 0}, 
                      {0, 0, 4, 14, 10, 0, 2, 0, 0}, 
                      {0, 0, 0, 0, 0, 2, 0, 1, 6}, 
                      {8, 11, 0, 0, 0, 0, 1, 0, 7}, 
                      {0, 0, 2, 0, 0, 0, 6, 7, 0} 
                     };
    dijkstra(graph, 0);
    return 0; 
}
